18640538

素因数分解:

$2^1\times 7^1\times {\mathrm{653}}^1\times {\mathrm{2039}}^1$

素因数の和:2701

約数の個数: 16

約数和(自身を含む): 32019840

約数和(自身を除く): 13379302

約数列:

[1, 2, 7, 14, 653, 1306, 2039, 4078, 4571, 9142, 14273, 28546, 1331467, 2662934, 9320269, 18640538]

約数ペア:

[(1, 18640538), (2, 9320269), (7, 2662934), (14, 1331467), (653, 28546), (1306, 14273), (2039, 9142), (4078, 4571)]